Climate averages 1991–2020
Heshan weather
in May.
A warm, very wet month: the 5th warmest and the 11th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
May is a warm month in Heshan: daytime highs average 26.2°C and nights cool to about 18.4°C. By daytime temperature it is the 5th warmest of the 12 months.
Expect about 225 mm of rain on roughly 16 days, which makes May a very wet month (the 11th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 13 h 33 min on an average May day.
The nearest other city in this atlas is Changsha (74 km away). In May its highs average 26.6°C, about as warm as Heshan, with 275 mm of rain.
Among the 884 cities listed in China, Heshan ranks joint 404th of 884 for the warmest May highs and joint 760th of 884 for the driest May (rainfall, lowest first). The mean May high of those 884 cities is 25.2°C; Heshan is 1.0°C warmer than that mean.
From May to June, average highs rise by 2.8°C to 29.0°C, and monthly rainfall rises from 225 mm to 295 mm.
The annual picture
May in context
Monthly rainfall
Average total · mmAverages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated
Every month, side by side
Heshan climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 9.0°C2.2°C | 2.2°C | 75 | 11.1 | 10.511 h |
| February | 11.7°C4.4°C | 4.4°C | 88 | 11.9 | 11.211 h |
| March | 16.1°C8.2°C | 8.2°C | 156 | 15.8 | 12.012 h |
| April | 22.0°C13.8°C | 13.8°C | 183 | 16.1 | 12.813 h |
| May, selected | 26.2°C18.4°C | 18.4°C | 225 | 15.5 | 13.614 h |
| June | 29.0°C22.5°C | 22.5°C | 295 | 16.7 | 13.914 h |
| July | 32.0°C25.6°C | 25.6°C | 216 | 15.2 | 13.814 h |
| August | 31.5°C25.0°C | 25.0°C | 154 | 15.0 | 13.213 h |
| September | 27.7°C20.8°C | 20.8°C | 92 | 10.2 | 12.412 h |
| October | 22.7°C15.3°C | 15.3°C | 75 | 8.7 | 11.512 h |
| November | 17.0°C9.6°C | 9.6°C | 76 | 9.3 | 10.811 h |
| December | 11.4°C4.2°C | 4.2°C | 51 | 8.3 | 10.410 h |
Rainfall is the average of the 30 separate monthly totals. A rain day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.
Compare places
May in nearby cities
- Changsha in MayChina · 74 kmHigh 26.6°C · Low 18.7°C · 275 mm rain
- Shaoshan in MayChina · 74 kmHigh 26.2°C · Low 18.3°C · 227 mm rain
- Changde in MayChina · 82 kmHigh 26.5°C · Low 18.3°C · 181 mm rain
- Xiangxiang in MayChina · 95 kmHigh 26.8°C · Low 18.9°C · 259 mm rain
- Xiangtan in MayChina · 97 kmHigh 26.8°C · Low 19.0°C · 280 mm rain
- Loudi in MayChina · 99 kmHigh 26.1°C · Low 18.1°C · 231 mm rain
- Zhuzhou in MayChina · 114 kmHigh 26.9°C · Low 19.1°C · 291 mm rain
- Yueyang in MayChina · 115 kmHigh 26.5°C · Low 18.9°C · 243 mm rain
Read the numbers correctly
Climate, not a promise.
These patterns help compare months. They cannot tell you the weather on a specific day of your trip.
Sources, method and limitsHow these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Heshan) is explained once on the Heshan year overview and on the Sources, method and limits page.